Looked to me like they were trying to make it clear that this series will deal much more with the SHIELD agents than the actual popular superheroes we're used to. I'm wondering if we'll ever see any popular heroes like Iron Man, Hulk, or Thor. I'm guessing not....

From what I've heard the past day is Samuel L. Jackson would be up for a "Charlie" in Charlie's Angels type role, Colby Smulders is up for a recurring role but none of the movie stars have shown any interest in appearing, even in a cameo role.